CN102563175A - Piloted solenoid valve - Google Patents
Piloted solenoid valve Download PDFInfo
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- CN102563175A CN102563175A CN2010106247404A CN201010624740A CN102563175A CN 102563175 A CN102563175 A CN 102563175A CN 2010106247404 A CN2010106247404 A CN 2010106247404A CN 201010624740 A CN201010624740 A CN 201010624740A CN 102563175 A CN102563175 A CN 102563175A
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Abstract
The invention discloses a solenoid valve and in particular discloses a large-caliber piloted solenoid valve. The solenoid valve is provided with a fluid inlet and a fluid outlet and comprises main valve body components, wherein the main valve body component comprises a hollow main valve body and an inner valve seat arranged in the main valve body; the inner valve seat is fixed on the main valve body; the inner valve seat is provided with a piston cavity; and a main valve body component flow channel communicated with the fluid inlet is also arranged between the inner wall of the main valve body and the circumferential side wall of the inner valve seat. The solenoid valve has the following beneficial effects: the main valve body and the inner valve seat are combined to form the main valve body component; the solenoid valve is convenient to machine and has low manufacturing cost; and such a flow channel structure design ensures that the fluid has smaller flow resistance during flowing, thus the required flow can be obtained by using the relatively small main valve port and further, the manufacturing cost is lowered and the structure is miniaturized.
Description
Technical field
The present invention relates to flow control component, the guide electromagnetic valve that the control fluid refrigerant in particularly a kind of refrigeration technology field flows.
Background technique
In refrigeration technology field, solenoid valve is the cold medium flux controlling component of chiller plant, and its working procedure is generally: along with the energising or the outage of coil, solenoid valve opens in chiller plant systems such as air-conditioning or cuts out, thus the circulation and the interruption of control refrigerant.Certainly, the Applicable scope of solenoid valve is not limited in above-mentioned refrigeration technology field, such as, also be widely used in Hydraulic Field.It is two-stage or the multistage valve control mode of opening that some bigbore solenoid valves generally adopt leading type control.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of a kind of solenoid valve of typical leading type in the existing technology; Fig. 2 is the structural representation of the valve seat of solenoid valve among Fig. 1.
As shown in Figure 1, solenoid valve comprise main valve, pilot valve, inlet tube 4 ', outer pipe 5 ' and be set in the outside electromagnetic coil (not shown in FIG.) of pilot valve.Main valve comprise valve seat 1 ', be arranged in valve seat 1 ' valve pocket piston element 3 ' and be positioned at the end cap 2 of valve seat 1 ' top '.Valve seat 1 ' be provided with primary valve 1 ' 3, along with piston element 3 ' rising or descend, piston element 3 ' unlatchings or close primary valve 1 ' 3, thus realized inlet tube 4 ' and outer pipe 5 ' conducting and interruption.
As shown in Figure 2, valve seat 1 ' be provided with fluid inlet 1 ' 1 and fluid output 1 ' 2, fluid inlet 1 ' 1 and inlet tube 4 ' be communicated with, fluid output 1 ' 2 and outer pipe 5 ' be communicated with.As shown in Figure 2, the axis of fluid inlet 1 ' 1 and fluid output 1 ' 2 all with the axis normal of primary valve 1 ' 3, fluid at the flow direction of solenoid valve inside roughly shown in arrow in scheming.
Shown in arrow among Fig. 2, fluid is flowed through solenoid valve will be through four 90 ° of turnovers when inner, thereby have formed very big flow resistance in solenoid valve inside.Given this, in order to guarantee to obtain needed flow, need to increase the area of primary valve 1 ' 3; After the area of primary valve 1 ' 3 increases, correspondingly, open or close the piston element 3 of primary valve 1 ' 3 ' area also to increase.The two area increases the increase that can cause manufacture cost on the one hand, also is unfavorable for design of miniization on the other hand.In addition, the increase of the two area, when piston element 3 ' close primary valve 1 ' 3, the leakage rate of the two can increase, thereby can reduce the sealability between the two.
Given this, how reducing the inner flow resistance of solenoid valve, thereby use less relatively primary valve just can obtain needed flow, and then reduce manufacture cost and make the structure miniaturization, is the problem that those skilled in the art need solution badly.
Summary of the invention
The technical problem that the present invention will solve provides a kind of solenoid valve; The structural design of this solenoid valve makes fluid when mobile, have less flow resistance; Thereby use less relatively primary valve just can obtain needed flow; And through main valve body and interior valve seat are constituted the main valve body assembly, thereby process easy to assemblyly, and then can reduce manufacture cost and make the structure miniaturization.
For solving the problems of the technologies described above; The present invention provides a kind of solenoid valve of leading type; Have fluid inlet and fluid output, solenoid valve comprises the main valve body assembly, said main valve body assembly comprise hollow main valve body, be positioned at the valve seat of said main valve body; Valve seat is fixed in said main valve body in said, and said interior valve seat is provided with a piston cavity volume; The inwall of said main valve body with said in also have the main valve body assembly runner that is communicated with said fluid inlet between the circumferential side wall of valve seat.Main valve body assembly of the present invention combines through main valve body and interior valve seat, and both can process respectively like this, convenient processing and manufacture; Through main valve body and interior valve seat constitute the main valve body assembly, both are manufacturing respectively, manufacture process is simple and convenient relatively; And be combined to form main valve body assembly runner on main valve body and the interior valve seat; The design of the circulation path of runner can be optimized more and reduce flow resistance like this, and processing uses raw material also can reduce respectively, and structural design also can more be added with multiple variation than both one-body molded processing in addition; Particularly, can reduce the fluid flow resistance in the runner in the design of runner.With respect to integrated main valve body modular construction in order to guarantee the manufacturability requirement of moulding; Must be with the width widen and the entrance point machine shaping more complicated of circular arc runner, and the width of circular arc runner can be reduced as far as possible and process easy through being combined to form the main valve body assembly among the present invention.
Preferably, the diapire of the piston cavity volume of said interior valve seat setting is provided with positioning and guiding portion.
Preferably, said interior valve seat designs for streamline near the outside wall portions of said fluid inlet one side, and the outside wall portions of promptly said formation main valve body assembly runner is the circular arc combination of streamline shape.
Preferably, said main valve body also comprises pilot valve portion, and said pilot valve portion comprises the pilot valve cavity volume, has the pilot valve inlet passage that is communicated with between said pilot valve cavity volume and the said piston cavity volume.
Preferably, also be provided with balance channel on the said interior valve seat, said balance channel is near the fluid inlet side of said solenoid valve, and balance channel one end is communicated with said piston cavity volume, and the other end of balance channel is communicated with said fluid inlet.
Preferably, said interior valve seat is " U " shape structure roughly, and said balance channel is arranged at the diapire near said fluid inlet one side of said interior valve seat, thereby the diapire of promptly said piston cavity volume is communicated with the cavity of said fluid inlet.
Preferably; Said solenoid valve also comprises said piston cavity volume of pilot valve channel connection and said fluid output; The pilot valve passage comprises said pilot valve inlet passage and said pilot valve outlet passage; Pilot valve portion on the said main valve body is provided with the pilot valve mouth, and said pilot valve mouth is separated into said pilot valve inlet passage and said pilot valve outlet passage with said pilot valve passage.
Preferably, the minimum cross-sectional flow area of said pilot valve outlet passage is less than the minimum cross-sectional flow area of said pilot valve inlet passage, and the minimum cross-sectional flow area of pilot valve outlet passage is minimum more than 2 times of cross-sectional flow area of said balance channel.Like this; The piston element action of solenoid valve is reliable; If the minimum cross-sectional flow area of pilot valve outlet passage minimum below 2 times of cross-sectional flow area that are said balance channel, thus can cause solenoid valve to be opened the time pressure in piston pressure chamber descend too slow and make piston element pressure at two ends difference set up too slow action the solenoid valve reaction time longly maybe can't move too slowly.
Preferably, the axis of said piston cavity volume parallels with the axis of said fluid inlet or is consistent.Like this, the runner fluid flow resistance of the main valve body assembly of solenoid valve is minimum.
Preferably, have first positioning part in the chamber of said main valve body hollow, have a fixing part that cooperates with first positioning part of said main valve body at least on the said interior valve seat.Particularly, the positioning part can be the stepped part that cooperates, and also can be other positioning form in addition.Through the location of positioning part, location so between the two is reliable, and can not take place radially or axial displacement.
Preferably; Fixing part in said on the valve seat be specially said in valve seat radius vector two ears of extending laterally, the inwall of said main valve body with said in main valve body assembly runner between the circumferential side wall of valve seat be specially said main valve body hollow inwall and the said interior valve seat in chamber except formed runner between two ears circumferential side wall in addition.
The cross-sectional flow area of the runner that preferably, forms between said main valve body and the said interior valve seat is more than 1.5 times of said fluid inlet minimum sectional area.Like this, the pressure in the runner that forms between main valve body and the said interior valve seat falls less relatively.
Preferably, said in the diapire of piston cavity volume of valve seat also be provided with positioning and guiding portion, preferably, the axis of said positioning and guiding portion and the axis coaxle of said piston cavity volume or parallel.The to-and-fro motion of piston element in the piston cavity volume is just more steadily reliable like this.
Preferably, said interior valve seat is fixed by welding in said main valve body.Like this; The fixedly meeting of interior valve seat and main valve body is very reliable; And the crucial matching part in these two parts can carry out fine finishing again after welding is accomplished, and guarantees the coaxality of both crucial matching parts; Specifically as between piston cavity and the primary valve or the like, the whole coaxality of solenoid valve is relatively good like this.
On the basis of existing technology; The main valve body assembly of solenoid valve provided by the present invention comprises main valve body and interior valve seat; Through in the main receiving cavity of main valve body that interior valve seat is packed into and position and obtain the main valve body assembly, and through the passage that forms between main valve body and the interior valve seat as main valve body assembly runner; Obviously, will be with respect to fluid in the existing technology through being equivalent to the structural design of 90 ° of turnovers for four times, the present invention has obviously reduced fluid turnover number of times and turning angle, thereby the flow resistance that fluid receives significantly reduces.Relatively little from fluid inlet like this to main valve body assembly runner fluid resistance, thus under the situation of identical flow area, can reduce the pressure loss that fluid flows and improve the Kv value of solenoid valve, perhaps can reduce the latus rectum of primary valve and reach same through-current capacity; In addition; Solenoid valve of the present invention is through forming the main valve body assembly with the assembling of main valve body and interior valve seat is fixing, and formation main valve body assembly runner between the outer wall of the inwall that makes main valve body and interior valve seat, and relative existing technology is easy to process; Manufacture cost is lower, the runner design more reasonable.
Description of drawings
Fig. 1 is the structural representation of a kind of solenoid valve of typical leading type in the existing technology;
Fig. 2 is the structural representation of the valve seat of solenoid valve among Fig. 1;
Fig. 3 is the main pseudosection of solenoid valve in an embodiment of the present invention;
Fig. 4 is the local top plan view of solenoid valve among Fig. 3 embodiment;
Fig. 5 is that solenoid valve among Fig. 3 embodiment is at the fragmentary top pseudosection of open mode;
Fig. 6 is the structural representation of the main valve body assembly of solenoid valve among Fig. 3 and Fig. 4, Fig. 5;
Fig. 7 is the A-A part sectioned view of main valve body assembly among Fig. 6;
Fig. 8 is the main pseudosection of main valve body among Fig. 6;
Fig. 9 is the B-B part sectioned view of main valve body among Fig. 8.
Embodiment
Core of the present invention provides a kind of solenoid valve of leading type; The structural design of this solenoid valve makes when mobile, to have less flow resistance at fluid under the identical bore situation; Thereby use less relatively primary valve just can obtain needed flow, and then can reduce manufacture cost and make the structure miniaturization.Perhaps onesize primary valve can obtain the lower pressure loss, improves the efficiency of system.In order to make easily manufactured and to make the flow passage design of fluid, solenoid valve of the present invention includes the main valve body parts, and the main valve body parts comprise main valve body and interior valve seat, and both constitute the main valve body assembly.Both are manufacturing respectively; Manufacture process is simple and convenient relatively; And be combined to form main valve body assembly runner on main valve body and the interior valve seat, the design of the circulation path of runner can be optimized more and reduce flow resistance like this, and processing uses raw material also can reduce respectively.
In order to make those skilled in the art understand technological scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.
Please refer to Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9; Wherein Fig. 3 is the main pseudosection of the solenoid valve of leading type in an embodiment of the present invention; Fig. 4 is the top plan view of solenoid valve among Fig. 3 embodiment; Fig. 5 be solenoid valve among Fig. 3 embodiment at the fragmentary top pseudosection of open mode, Fig. 6 is the structural representation of the main valve body assembly of solenoid valve among Fig. 3 and Fig. 4, Fig. 5, Fig. 7 is the A-A part sectioned view of main valve body assembly among Fig. 6; Fig. 8 is the main pseudosection of main valve body among Fig. 6, and Fig. 9 is the B-B part sectioned view of main valve body among Fig. 8.
As shown in the figure; The solenoid valve of leading type provided by the present invention; Comprise main valve body assembly 1, pilot valve parts 2, be fixed on pilot valve parts 2 outsides electromagnetic coil (not drawing among the figure), with said main valve body assembly 1 fixed outlet valve body parts 7, outlet valve body component 7 comprises outlet valve body 71 and discharge connection 72; Outlet valve body 71 is provided with fluid output and reaches the fluid output 74 that flows out from primary valve 73 with primary valve 73, and the pilot valve sleeve pipe 22 and main valve body assembly 1 fixing seal of pilot valve parts 2 carry out sealing and fixing or the like as adopting welding manner; Be provided with reciprocating piston element 5 in the piston cavity volume of solenoid valve, piston element 5 opens or closes primary valve 73 under the control of fluid, thereby realizes the unlatching of solenoid valve or close.
As shown in the figure particularly; The interior valve seat 12 that main valve body assembly 1 comprises the main valve body 11 that is provided with main receiving cavity 114, be fixedly connected on entrance sleeve 13 on the main valve body 11, main receiving cavity 114 internal fixation of main valve body 11 are provided with; Be that main valve body 11 is hollow structure, its hollow has partly formed main receiving cavity.In the present embodiment, in order to reduce the resistance that fluid flows, main receiving cavity 114 is arranged to entrance sleeve 13 coaxial; Main in addition receiving cavity 114 also can be arranged to depart from certain distance and both parallel modes with entrance sleeve 13.Be provided with the pilot valve portion 110 that matches with the pilot valve parts at main valve body 11 sidepiece radially, comprise the pilot valve mouth 112 that is provided with in pilot valve cavity volume 111, the pilot valve cavity volume 111 in the pilot valve portion 110.Between pilot valve mouth 112 and discharge connection 72, has a pilot valve outlet passage 115 that is communicated with both.Pilot valve outlet passage 115 is that the part is positioned on the guide valve seat in the present embodiment, and connects discharge connection 72 through an adapter, can certainly be other connection conduction mode.The main receiving cavity 114 of main valve body 11 comprises the fluid inlet 117 near entrance sleeve 13; On main valve body 11, also be provided with first positioning part 116 that is used for interior valve seat 12 location, also be provided with second positioning part 113 that is used for outlet valve body component 7 stationary positioned at opposite side away from fluid inlet 117; Two positioning parts form through a stepped part respectively is set in the present embodiment particularly.Valve seat 12 in being set with in the main receiving cavity 114 of main valve body 11; Valve seat 12 has the ear 126 of two evaginations in the present embodiment; Like Fig. 7; Ear 126 match with first positioning part 116 of the main receiving cavity 114 of main valve body 11 and obtain axially, location radially, particularly, through interior valve seat 12 is packed into or be pressed into main receiving cavity 114 make in first positioning part 116 of main receiving cavity 114 of some and main valve body 11 of two ears 126 of valve seat 12 connect and obtain axially locating; Two ears 126 of interior valve seat 12 can adopt the mode of close-fitting to fix with first positioning part 116 of the main receiving cavity 114 of valve seat 11; In order to make both cooperations more reliable, can also adopt the mode of welding further fixing in both fixing backs, all can realize both secure fixation as adopting modes such as spot welding, stove weldering or soldering.The mode that in addition, also can adopt transition fit to weld is then fixed.For the coaxality that guarantees that solenoid valve is whole, fine finishing can or be carried out in the laggard row processing of main valve body assembly assembling in second positioning part.
The assembly of main valve body described in the present embodiment is the solid of rotation of general cylindrical, and fluid inlet 117 is axially offered along main valve body assembly 1.Need to prove that at this profile of main valve body parts 1 also can be other shape such as square or hexagon in addition.
Solenoid valve also comprises piston element 5; Piston element 5 comprises piston 51, piston seal plug 52, sealing plug pad 53, fastening piece, and fastening piece is to have adopted fastening screw trip bolt 54 in the present embodiment, in addition; Also can adopt other means of fixation, as fixing etc. through the crimping mode.In addition, piston 51 also can be that one constitutes with the piston seal plug, does not so just need firm to fix.Wherein, Piston 51 matches with piston cavity volume 122; Thereby thereby piston 51 can carry out axially reciprocating to drive the piston element to-and-fro motion piston seal plug 52 separate with primary valve 73 mutually or contact opening and closing primary valve 73, in order to make piston 51 and piston cavity volume 122 the better seal performance to be arranged along piston cavity volume 122, also on piston 51, is provided with piston packing ring 55 and piston tightening hoop 56 in the present embodiment.Particularly; Be to be provided with inside groove part at the outside wall portions position that cooperates with piston cavity volume 122 of piston 51; Piston tightening hoop 56 and piston packing ring 55 are placed groove part, make piston tightening hoop 56 conflict piston packing rings 55 make piston packing ring 55 outwards contact and seal with the inner wall part of piston cavity volume 122 to the inner wall part direction of piston cavity volume.Also be provided with elastic member between piston element 5 and the interior valve seat 12, particularly like piston spring 6.Piston 51 also is provided with a supporting portion, is used for support piston spring 6, and particularly, in the present embodiment, the supporting portion is the bottom wall portion at piston 51 inner chambers, and certainly, the supporting portion can also be other structure.
Formed piston pressure chamber 1221 between solenoid valve inner carrier parts 5 and the interior valve seat 12 like this; Piston pressure chamber 1221 has balance channel 121 to lead to the hyperbaric chamber 1141 that is communicated with high aluminium hydraulic pressed connecting pipe 13 between main valve body 11 and the interior valve seat 12 respectively; Be that piston pressure chamber 1221 is communicated with hyperbaric chamber 1141 through balance channel 121; And be communicated with pilot valve pressure chamber 1111 through pilot valve inlet passage 14, and pilot valve pressure chamber 1111 is through the pilot valve mouth, further be connected with fluid output 74 side relatively low pressure chambeies through pilot valve outlet passage 115.Thereby piston pressure chamber 1221 optionally is communicated with through the pilot valve mouth with the relatively low pressure chamber of fluid output side through the pilot valve passage or cuts off.
Sealability when guaranteeing closed electromagnetic valve between piston element and the primary valve 73; Be provided with a circular groove at piston 51 near primary valve 73 sides that export valve seat 71 in the present embodiment; Be used to place piston seal plug 52; In order to guarantee piston seal plug 52 and piston 51 reliability of fixation, also be provided with sealing plug pad 53 in piston seal plug 52 deflection primary valves one side, and piston seal plug 52, sealing plug pad 53 be fixed on the piston 51 in addition through fastening screw trip bolt 54.Certainly, piston seal plug 52 can also be wholely set with piston 51, so just can be otherwise unfixing.
Relative with said piston element 5 is outlet valve body component 7, and outlet valve body component 7 comprises outlet valve body 71 and discharge connection 72, and both are fixed by welding in together; Outlet valve body 71 is provided with primary valve 73; Primary valve 73 is oppositely arranged with the piston seal plug 52 of piston element 5, and outlet valve body component 7 is fixed by welding in main valve body assembly 1, like this; Both have cancelled the mode of fixing and utilizing seal ring to seal through flange in the existing technology; Connect more reliably, and, also can improve working life like this owing to cancelled the use of seal ring; And materials used also can reduce, thereby reduces the use amount of material.
Like this, piston element 5, is just selectively opened perhaps and is closed primary valve 73 down during to-and-fro motion in control, has promptly realized the unlatching of solenoid valve or closes.
The pilot valve sleeve pipe 22 that pilot valve parts 2 comprise and pilot valve portion welding is fixing, away from pilot valve mouth 112 and and the end socket 21 that is tightly connected of pilot valve sleeve pipe 22, in the pilot valve sleeve pipe 22 core iron parts 24, be arranged on core iron returning spring 23 between end socket 21 and the core iron parts 24, pilot valve mouth 112 settings relatively core iron sealing plug 27, be used for fixing sealing plug stop pad 28, the damping spring 26 of core iron sealing plug 27; Core iron sealing plug 27 basic fixed are on core iron parts 24, and core iron sealing plug 27 axially can do little to move the impact that when core iron parts 24 are done axial motion, can alleviate 27 pairs of pilot valve mouths 112 of core iron sealing plug like this with respect to core iron parts 24 in the present embodiment.Like this, pilot valve portion 110 has just formed a pilot valve pressure chamber 1111 after accomplishing with the pilot valve component-assembled, in addition, on main valve body assembly 1, also is provided with the pilot valve inlet passage 14 of the pilot valve pressure chamber 1111 of a conducting piston pressure chamber 1221 and pilot valve.Pilot valve pressure chamber 1111 is connected with the discharge connection 72 of solenoid valve when pilot valve mouth 112 is opened and becomes the relatively low pressure chamber, is connected with the piston pressure chamber 1221 of solenoid valve again simultaneously, and like this, piston pressure chamber 1221 also becomes the relatively low pressure chamber; When pilot valve mouth 112 is closed, then cut off and being communicated with of the discharge connection 72 of solenoid valve, and only be connected with the piston pressure chamber 1221 of solenoid valve.
In order to guarantee the coaxality between outlet valve body component 7 and the piston element 5; Also be provided with positioning reference plane 118 on the main valve body 11 of main valve body assembly; And the positioning reference plane 118 on the main valve body 11 of main valve body assembly is after 12 welding of main valve body and interior valve seat are fixing, to process the problems such as distortion that possibly cause when having avoided welding so again; Outlet valve body component 7 can have coaxality preferably when cooperating with main valve body assembly 1; Like this; Under the situation that the coaxality of main valve body 11, interior valve seat 12, piston element 5 is able to guarantee; Coaxality between the primary valve 73 of piston element 5 and outlet valve body component 7 is guaranteed too, and positioning reference plane 118 cooperates with outlet valve body component 7 peripheral side.For guaranteeing the coaxality of piston element and outlet valve body component more, the inner wall part radially and the positioning and guiding portion 123 of the piston cavity volume 122 of internal valve seat 12 also carry out a fine finishing when can also in the end process positioning reference plane 118.This structural design has realized between outlet valve body component 7 and the main valve body assembly 1 location and coaxality between the two diametrically easily, and reliability is higher.In addition, the pilot valve inlet passage 14 that is provided with on the main valve body assembly 1 also can be after main valve body and interior valve seat be fixing again row process.
Particularly, the working principle of solenoid valve is following basically, and is as shown in the figure, and pilot valve inlet passage 14, pilot valve mouth 112, pilot valve outlet passage 115 have formed the pilot valve passage of solenoid valve.When solenoid valve is switched on; Core iron parts 24 move to end socket 21 directions under the effect of electromagnetic force; The core iron sealing plug 27 that core iron parts 24 drive said pilot valve leaves pilot valve mouth 112, and pilot valve mouth 112 is opened, and piston pressure chamber 1221 is communicated with discharge connection 72 through above-mentioned pilot valve passage.Because the bore of above-mentioned pilot valve passage is obviously greater than the bore of balance channel 121; The through-current capacity of pilot valve passage is obviously greater than the through-current capacity of balance channel 121; Thereby the pressure ratio in the piston pressure chamber 1221 in piston element 5 left sides approaches the pressure in the discharge connection 72 at this moment; Because discharge connection 72 places are the relatively low pressure end, thereby the pressure in the piston pressure chamber 1221 is less relatively.At this moment; The fluid of being come in by fluid inlet adapter 13 gets into the valve pocket between main valve body 11 and the interior valve seat 12 and becomes relative hyperbaric chamber 1141; And get into 73 weeks of primary valve laterally and piston element 5 with main valve body assembly 1, export the cavity between the valve body 71; Because to take over 13 places be high voltage terminal to fluid inlet, thereby the right side of piston element 5 is relative high voltage terminal, and the pressure of the hyperbaric chamber on piston element 5 right sides overcomes pressure and the elastic force of piston spring 6 in the piston pressure chamber 1221 in piston element 5 left sides; Promote piston element 5 to left movement, thereby realized primary valve 73 unlatchings.The elementary process that fluid flows is: take over 13 fluids of coming in by fluid inlet; Through the main valve body assembly runner between fluid inlet 117, main valve body 11 and the interior valve seat 12 of main valve body assembly; Get into primary valve 73, and then in inflow and the discharge connection 72 that primary valve 73 is communicated with.
When the solenoid valve no electric circuit, core iron parts 24 move to the direction away from end socket 21 under the effect of the spring force of returning spring 23, and core iron sealing plug 27 guide valve ports 112 directions that core iron parts 24 drive said pilot valve move; Pilot valve mouth 112 is closed; The pilot valve outlet passage 115 that piston pressure chamber 1221 is communicated with discharge connection 72 is cut off, and pilot valve pressure chamber 1111 interrupts and being communicated with of discharge connection 72 low voltage terminals, and has also interrupted and being communicated with of discharge connection 72 low voltage terminals in piston pressure chamber 1221 equally; Under the effect of balance channel 121; Pressure in the piston pressure chamber 1221 slowly raises, and is last near equaling the pressure that fluid inlet is taken over 13 high voltage terminals, thereby under the acting in conjunction of the spring force of pressure difference and piston spring 6; Piston element 5 moves right, and primary valve 73 is closed.
Can know by said structure; When piston element 5 is opened primary valve 73; Fluid is taken over the 13 main valve body assembly runners 119 that directly get between the outer wall of circumferential side wall and said interior valve seat 12 of main valve body 11 by fluid inlet; And get into primary valves 73 by main valve body assembly runner 119 again, and then in the discharge connection 72 of the solenoid valve that is communicated with primary valve 73 of entering.Obviously, will be with respect to fluid in the existing technology through the structural design of four 90 ° of turnovers, the present invention has obviously reduced fluid turnover number of times and angle, thereby the flow resistance that fluid receives under the situation of identical flow area can significantly reduce.
Like this, under identical fluid resistance situation, can reduce the design latus rectum of primary valve 73 relatively.Because flow resistance obviously reduces, thereby under the situation that requires same through-current capacity and flow resistance, can use less primary valve 73 just can obtain needed flow; The area of primary valve 73 reduces, thereby the area of closing or open the piston element 5 of primary valve 21 also can reduce accordingly, and then has reduced manufacture cost and made the structure miniaturization.In addition, the area of primary valve 73 and piston element 5 reduces, and when piston element 5 was closed primary valve 73, the leakage rate between the two also can correspondingly reduce, thereby can improve the sealability between the two, thereby improves the performance of solenoid valve.
On the basis of the foregoing description, the resistance when refrigerant is flowed is littler, and concrete setting is made in position that can also the convection cell import.Such as, through making the axis conllinear of entrance sleeve 13 and the primary valve 73 of outlet valve body 71, perhaps both parallel axes, and spacing is less.Obviously, this structural design can further reduce flow resistance.Certainly; As shown in the figure; The sectional shape of main valve body assembly runner 119 is roughly circular, and in order further to reduce flow resistance, the aperture of fluid inlet 117 need be greater than the internal diameter of the main valve body assembly runner 119 of circular combination; In other words, the aperture A of fluid inlet 117 need be greater than the external diameter B of interior valve seat 12.In addition, the axis of the axis of fluid inlet 117 and primary valve 73 can laterally arrange, and particularly, outlet valve body 71 is departed from mutually with fluid inlet 117, and fluid inlet 117 can be reduced to the resistance of main valve body assembly runner.
Also can find out from last; Heavy caliber guide electromagnetic valve of the present invention is because the main valve body 11 of main valve body assembly 1 is fixing through welding with interior valve seat 12; And after welding is fixing, carry out precision-fit again and process; Have coaxality preferably thereby make between piston cavity volume and the positioning part of main valve body assembly 1, thereby the assembling that makes solenoid valve more accurately and reliably.Carry out sealing and fixing through welding between outlet valve body component 7 and the main valve body assembly 1 in addition; Cancelled flange connection of the prior art; Fixed connection is more reliable like this, does not also have again because of seal ring is aging to cause the problem that leaks outside, in addition; Simplify design, also reduced amount of parts.
Need to prove, in the above-described embodiments, only make a kind of concrete setting for realization piston element 5 reciprocating structure in the piston cavity volume, and the other structure that can realize this function also should be within protection scope of the present invention.Various orientation word of mentioning in the specification of the present invention such as upper and lower, inside and outside, left, right, front and rear etc. and should not be limitations of the present invention just for convenience of description.
More than a kind of solenoid valve provided by the present invention has been carried out detailed introduction.Used concrete example among this paper principle of the present invention and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (11)
1. the solenoid valve of a leading type; Have fluid inlet and fluid output; It is characterized in that: said solenoid valve comprises main valve body assembly (1); Said main valve body assembly (1) comprise hollow main valve body (11), be positioned at the valve seat (12) of said main valve body (11), said in valve seat (12) be fixed in said main valve body (11), said in valve seat (12) be provided with a piston cavity volume (122); The inwall of said main valve body (11) with said in also have the main valve body assembly runner that is communicated with said fluid inlet between the circumferential side wall of valve seat (12).
2. guide electromagnetic valve as claimed in claim 1 is characterized in that, the diapire of the piston cavity volume (122) that said interior valve seat (12) is provided with is provided with positioning and guiding portion.
3. guide electromagnetic valve as claimed in claim 2; It is characterized in that; Said main valve body (11) also comprises pilot valve portion (110), and said pilot valve portion (110) comprises pilot valve cavity volume (111), has the pilot valve inlet passage (14) that is communicated with between said pilot valve cavity volume (111) and the said piston cavity volume (122); Also be provided with balance channel (121) on the valve seat (12) in said; Said balance channel (121) is near the fluid inlet side of said solenoid valve; Said balance channel (121) one ends are communicated with said piston cavity volume (122), and the other end of said balance channel (121) is communicated with said fluid inlet.
4. guide electromagnetic valve as claimed in claim 3; It is characterized in that; Valve seat (12) is " U " shape structure roughly in said; Said balance channel (121) be arranged at said in the diapire near said fluid inlet one side of valve seat (12), promptly said piston cavity volume (122) thus diapire be communicated with the cavity of said fluid inlet.
5. guide electromagnetic valve as claimed in claim 4; It is characterized in that; Said solenoid valve also comprises said piston cavity volume of pilot valve channel connection and said fluid output; The pilot valve passage comprises said pilot valve inlet passage (14) and pilot valve outlet passage (115), and the pilot valve portion (110) on the said main valve body is provided with pilot valve mouth (112), and said pilot valve mouth (112) is separated into said pilot valve inlet passage (14) and said pilot valve outlet passage (115) with said pilot valve passage; Preferably; The minimum cross-sectional flow area of said pilot valve outlet passage (115) is less than the minimum cross-sectional flow area of said pilot valve inlet passage (14), and the minimum cross-sectional flow area of pilot valve outlet passage (115) is more than 2 times of the minimum cross-sectional flow area of said balance channel (121).
6. like the wherein arbitrary described guide electromagnetic valve of claim 1-5, it is characterized in that the axis of said piston cavity volume (122) parallels with the axis of said fluid inlet or be consistent.
7. like the wherein arbitrary described guide electromagnetic valve of claim 1-5; It is characterized in that; Have first positioning part (116) in the chamber of said main valve body (11) hollow, have a fixing part that cooperates with first positioning part (116) of said main valve body (11) at least on the said interior valve seat (12).
8. guide electromagnetic valve as claimed in claim 7; It is characterized in that; Fixing part in said on the valve seat (12) specifically comprise said in valve seat (12) to two ears that radial outside extends, the inwall of said main valve body (11) with said in main valve body assembly runner between the circumferential side wall of valve seat (12) comprise said main valve body (11) hollow inwall and the said interior valve seat (12) in chamber except formed runner between two ears circumferential side wall in addition.
9. guide electromagnetic valve as claimed in claim 8 is characterized in that, the cross-sectional flow area of the runner that forms between said main valve body (1) and the said interior valve seat (12) is more than 1.5 times of said fluid inlet minimum sectional area.
10. like the arbitrary described guide electromagnetic valve of above-mentioned claim; It is characterized in that; The diapire of piston cavity volume of valve seat (12) also is provided with positioning and guiding portion (123) in said, preferably, and the axis of said positioning and guiding portion (123) and the axis coaxle of said piston cavity volume or parallel.
11., it is characterized in that said interior valve seat (12) is fixed by welding in said main valve body (11) like the arbitrary described guide electromagnetic valve of above-mentioned claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010624740.4A CN102563175B (en) | 2010-12-25 | 2010-12-25 | A kind of guide electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010624740.4A CN102563175B (en) | 2010-12-25 | 2010-12-25 | A kind of guide electromagnetic valve |
Publications (2)
| Publication Number | Publication Date |
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| CN102563175A true CN102563175A (en) | 2012-07-11 |
| CN102563175B CN102563175B (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010624740.4A Active CN102563175B (en) | 2010-12-25 | 2010-12-25 | A kind of guide electromagnetic valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819330A (en) * | 2015-04-01 | 2015-08-05 | 浙江三花股份有限公司 | Pilot-operated type solenoid valve and combination method therefor |
| WO2021131498A1 (en) * | 2019-12-24 | 2021-07-01 | 株式会社デンソー | Valve device |
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| CN2591359Y (en) * | 2002-12-04 | 2003-12-10 | 曾庆贵 | Damping wear resisting non-return valve |
| US20070210270A1 (en) * | 2006-03-07 | 2007-09-13 | Husco International, Inc. | Pilot operated valve with a pressure balanced poppet |
| CN201215210Y (en) * | 2008-04-28 | 2009-04-01 | 浙江新三荣制冷有限公司 | Piston type solenoid valve |
| CN201354853Y (en) * | 2009-02-11 | 2009-12-02 | 赵旭 | High pressure electromagnetic valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2591359Y (en) * | 2002-12-04 | 2003-12-10 | 曾庆贵 | Damping wear resisting non-return valve |
| US20070210270A1 (en) * | 2006-03-07 | 2007-09-13 | Husco International, Inc. | Pilot operated valve with a pressure balanced poppet |
| CN201215210Y (en) * | 2008-04-28 | 2009-04-01 | 浙江新三荣制冷有限公司 | Piston type solenoid valve |
| CN201354853Y (en) * | 2009-02-11 | 2009-12-02 | 赵旭 | High pressure electromagnetic valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104819330A (en) * | 2015-04-01 | 2015-08-05 | 浙江三花股份有限公司 | Pilot-operated type solenoid valve and combination method therefor |
| WO2021131498A1 (en) * | 2019-12-24 | 2021-07-01 | 株式会社デンソー | Valve device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102563175B (en) | 2015-08-12 |
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